Return-path: Received: from dedo.coelho.fi ([88.198.205.34]:59421 "EHLO dedo.coelho.fi" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1752146AbaKJJXs (ORCPT ); Mon, 10 Nov 2014 04:23:48 -0500 From: Luca Coelho To: emmanuel.grumbach@intel.com Cc: linux-wireless@vger.kernel.org, Luciano Coelho Date: Mon, 10 Nov 2014 11:10:17 +0200 Message-Id: <1415610621-27438-13-git-send-email-luca@coelho.fi> (sfid-20141110_102400_075552_1E18D7C3) In-Reply-To: <1415610621-27438-1-git-send-email-luca@coelho.fi> References: <1415610621-27438-1-git-send-email-luca@coelho.fi> Subject: [PATCH 12/16] iwlwifi: mvm: add a channel_switch op to bypass mac80211 timer Sender: linux-wireless-owner@vger.kernel.org List-ID: From: Luciano Coelho We need to call ieee80211_chswitch_done() ourselves just when the absence TE started, so we perform the actual context switch early enough. To do so, add a dummy channel_switch op, which will cause mac80211 to skip the countdown timer and allow us to call ieee80211_chswitch_done() to complete the operation. Signed-off-by: Luciano Coelho --- drivers/net/wireless/iwlwifi/mvm/mac80211.c | 15 +++++++++++++++ drivers/net/wireless/iwlwifi/mvm/time-event.c | 1 + 2 files changed, 16 insertions(+) diff --git a/drivers/net/wireless/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/iwlwifi/mvm/mac80211.c index de6a64d..55ab81e 100644 --- a/drivers/net/wireless/iwlwifi/mvm/mac80211.c +++ b/drivers/net/wireless/iwlwifi/mvm/mac80211.c @@ -3016,6 +3016,20 @@ static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw, } #endif +static void iwl_mvm_channel_switch(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_channel_switch *chsw) +{ + /* By implementing this operation, we prevent mac80211 from + * starting its own channel switch timer, so that we can call + * ieee80211_chswitch_done() ourselves at the right time + * (which is when the absence time event starts). + */ + + IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw), + "dummy channel switch op\n"); +} + static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_channel_switch *chsw) @@ -3190,6 +3204,7 @@ const struct ieee80211_ops iwl_mvm_hw_ops = { .set_tim = iwl_mvm_set_tim, + .channel_switch = iwl_mvm_channel_switch, .pre_channel_switch = iwl_mvm_pre_channel_switch, .post_channel_switch = iwl_mvm_post_channel_switch, diff --git a/drivers/net/wireless/iwlwifi/mvm/time-event.c b/drivers/net/wireless/iwlwifi/mvm/time-event.c index aa05a71..2feff15 100644 --- a/drivers/net/wireless/iwlwifi/mvm/time-event.c +++ b/drivers/net/wireless/iwlwifi/mvm/time-event.c @@ -207,6 +207,7 @@ iwl_mvm_te_handle_notify_csa(struct iwl_mvm *mvm, break; case NL80211_IFTYPE_STATION: iwl_mvm_csa_client_absent(mvm, te_data->vif); + ieee80211_chswitch_done(te_data->vif, true); break; default: /* should never happen */ -- 2.1.1